// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "cc/input/scroll_state_data.h"
#include "cc/trees/scroll_node.h"

namespace cc {

ScrollStateData::ScrollStateData()
    : delta_x(0)
    , delta_y(0)
    , position_x(0)
    , position_y(0)
    , velocity_x(0)
    , velocity_y(0)
    , is_beginning(false)
    , is_in_inertial_phase(false)
    , is_ending(false)
    , should_propagate(false)
    , from_user_input(false)
    , delta_consumed_for_scroll_sequence(false)
    , is_direct_manipulation(false)
    , delta_granularity(0)
    , caused_scroll_x(false)
    , caused_scroll_y(false)
    , current_native_scrolling_node_(nullptr)
{
}

ScrollStateData::ScrollStateData(const ScrollStateData& other) = default;

ScrollNode* ScrollStateData::current_native_scrolling_node() const
{
    return current_native_scrolling_node_;
}

void ScrollStateData::set_current_native_scrolling_node(
    ScrollNode* current_native_scrolling_node)
{
    current_native_scrolling_node_ = current_native_scrolling_node;
    current_native_scrolling_element_ = ElementId();
}

ElementId ScrollStateData::current_native_scrolling_element() const
{
    if (current_native_scrolling_node_)
        return current_native_scrolling_node_->element_id;
    return current_native_scrolling_element_;
}

void ScrollStateData::set_current_native_scrolling_element(
    ElementId element_id)
{
    current_native_scrolling_element_ = element_id;
    current_native_scrolling_node_ = nullptr;
}

} // namespace cc
